Question 1

The DLCO would be decreased in all of the following except:

Accepted Answer

A) pulmonary emphysema 
B) secondary polycythemia 
C) severe anemia 
D) pulmonary fibrosis 
A) pulmonary emphysema 
B) secondary polycythemia 
C) severe anemia 
D) pulmonary fibrosis

Question 2

After a resting expiration, air still remains in the lungs. What is this volume called?

Accepted Answer

A) functional residual capacity (FR
C)  
B) vital capacity (V
C)  
C) residual volume (RV) 
D) expiratory reserve volume (ERV) 
A) functional residual capacity (FR
C)  
B) vital capacity (V
C)  
C) residual volume (RV) 
D) expiratory reserve volume (ERV)

Question 3

Which of the following are true statements related to the volume of tissue nitrogen excreted during the N2 washout test for measuring functional residual capacity (FRC)?
I.	It is not a factor.
II.	It varies with the length of the test.
III.	It varies with the weight of the patient.
IV.	It cannot be correct for.

Accepted Answer

A) I only 
B) II and III only 
C) II, III, and IV 
D) IV only 
A) I only 
B) II and III only 
C) II, III, and IV 
D) IV only

Question 4

What is the normal predicted vital capacity (VC) measurement in the adult patient?

Accepted Answer

A) 3600 ml 
B) 4800 ml 
C) 5400 ml 
D) 6000 ml 
A) 3600 ml 
B) 4800 ml 
C) 5400 ml 
D) 6000 ml

Question 5

You have just given your patient a 0.03 mg/ml dose of methacholine to assess for asthma. The subsequent forced vital capacity (FVC) shows no change. What should you do next?

Accepted Answer

A) Report to the physician that the patient does not have asthma. 
B) Wait 1 hour and repeat the test at the same dose. 
C) Have the patient return tomorrow to repeat the test. 
D) Double the dose and repeat the FVC maneuver. 
A) Report to the physician that the patient does not have asthma. 
B) Wait 1 hour and repeat the test at the same dose. 
C) Have the patient return tomorrow to repeat the test. 
D) Double the dose and repeat the FVC maneuver.

Question 6

While checking the accuracy of a portable spirometer for volumetric measures with a calibrated super syringe, you obtain a mean measured value of 2.7 L. What is the percent error of this instrument?

Accepted Answer

A) 1% 
B) 10% 
C) 30% 
D) 90% 
A) 1% 
B) 10% 
C) 30% 
D) 90%

Question 7

What pulmonary function test presents the highest risk for fainting?

Accepted Answer

A) slow vital capacity 
B) tidal volume per minute 
C) maximum voluntary ventilation 
D) total lung capacity 
A) slow vital capacity 
B) tidal volume per minute 
C) maximum voluntary ventilation 
D) total lung capacity

Question 8

Which of the following adverse reactions is NOT seen with pulmonary function testing?

Accepted Answer

A) syncope 
B) cough 
C) hemoptysis 
D) chest pain 
A) syncope 
B) cough 
C) hemoptysis 
D) chest pain

Question 9

Which of the following are necessary to ensure a valid single-breath diffusing capacity of the lungs (DLCO) test result?
I.	Two or more acceptable tests should be averaged.
II.	Breath-hold time should be between 3 and 5 seconds.
III.	Corrections for hemoglobin (Hb) and COHb should be included.
IV.	The maneuvers should be reproducible to within 10%.

Accepted Answer

A) I, II, and III 
B) II and IV 
C) I, III, and IV 
D) I, II, III, and IV 
A) I, II, and III 
B) II and IV 
C) I, III, and IV 
D) I, II, III, and IV

Question 10

A patient has an expired minute ventilation of 14.2 L and a ventilatory rate of 25/min. What is the average VT?

Accepted Answer

A) 568 ml 
B) 635 ml 
C) 725 ml 
D) 410 ml 
A) 568 ml 
B) 635 ml 
C) 725 ml 
D) 410 ml

Question 11

What percent of the total lung capacity (TLC) does the residual volume (RV) normally represent?

Accepted Answer

A) 10% 
B) 20% 
C) 30% 
D) 40% 
A) 10% 
B) 20% 
C) 30% 
D) 40%

Question 12

What conclusions can you draw from the following data, obtained on a 67-year-old, 76-kg man admitted for pulmonary complications arising from silicosis? $\begin{array}{|l|l|l|l|l|l|l|l|}
\hline& \text { ACTUAL } & \text { PRED } & \% \text { PRED } && \text { ACTUAL } & \text { PRED } & \% \text { PRED } \
\hline \text { TLC } & 4.34 & 7.73 & 56 \% & \text { FVC } & 2.86 & 4.74 & 60 \% \
\hline \text { FRC } & 1.73 & 4.36 & 40 \% & \% \text { FEV }_{1} & 96 \% & 83 \% & \
\hline \text { RV } & 1.45 & 2.63 & 55 \% & \text { FEF }_{200-1200} & 6.89 & 6.71 & 103 \% \
\hline \text { VC } & 2.89 & 4.74 & 61 \% & \text { FEF }_{25 \%-75 \%} \% & 2.78 & 2.88 & 96 \% \
\hline
\end{array}$

Accepted Answer

A) Results indicate generalized airway obstruction. 
B) Results indicate normal pulmonary function. 
C) Results indicate a combined disease process. 
D) Results indicate a restrictive lung disorder. 
A) Results indicate generalized airway obstruction. 
B) Results indicate normal pulmonary function. 
C) Results indicate a combined disease process. 
D) Results indicate a restrictive lung disorder.

Question 13

What is the primary problem in obstructive lung disease?

Accepted Answer

A) increased airway resistance 
B) low lung volumes 
C) increased pulmonary capillary pressure 
D) reduced lung diffusion 
A) increased airway resistance 
B) low lung volumes 
C) increased pulmonary capillary pressure 
D) reduced lung diffusion

Question 14

To what does the range or limit of a device's measuring ability refer?

Accepted Answer

A) capacity 
B) accuracy 
C) error 
D) precision 
A) capacity 
B) accuracy 
C) error 
D) precision

Question 15

What is the predicted normal forced vital capacity (FVC) for the average 20-year-old man?

Accepted Answer

A) 4.5 L 
B) 5.6 L 
C) 6.2 L 
D) 7.0 L 
A) 4.5 L 
B) 5.6 L 
C) 6.2 L 
D) 7.0 L

Question 16

What is the ability of a measuring device to consistently provide the same measure of the same quantity?

Accepted Answer

A) capacity 
B) accuracy 
C) linearity 
D) precision 
A) capacity 
B) accuracy 
C) linearity 
D) precision

Question 17

To ensure validity of the forced vital capacity (FVC) measurement, how many attempts should the patient perform?

Accepted Answer

A) just one good one 
B) two that are nearly the same 
C) three that are acceptable 
D) at least four 
A) just one good one 
B) two that are nearly the same 
C) three that are acceptable 
D) at least four

Question 18

Which of the following is a TRUE statement?

Accepted Answer

A) VC = FRC + VT 
B) VC = IRV + VT + ERV 
C) VC = VT + IRV + RV 
D) FRC = VT + ERV 
A) VC = FRC + VT 
B) VC = IRV + VT + ERV 
C) VC = VT + IRV + RV 
D) FRC = VT + ERV

Question 19

What is the minimum objective standard for the volume exhaled during the final 1 second of an acceptable forced vital capacity effort?

Accepted Answer

A) 0.10 L 
B) 0.05 L 
C) 0.025 L 
D) 0.001 L 
A) 0.10 L 
B) 0.05 L 
C) 0.025 L 
D) 0.001 L

Question 20

What is the gas normally used to measure the diffusing capacity of the lung?

Accepted Answer

A) O2 
B) CO 
C) CO2 
D) He 
A) O2 
B) CO 
C) CO2 
D) He

Exam 19: Pulmonary Function Testing

The DLCO would be decreased in all of the following except:

After a resting expiration, air still remains in the lungs. What is this volume called?

What is the normal predicted vital capacity (VC) measurement in the adult patient?

You have just given your patient a 0.03 mg/ml dose of methacholine to assess for asthma. The subsequent forced vital capacity (FVC) shows no change. What should you do next?

While checking the accuracy of a portable spirometer for volumetric measures with a calibrated super syringe, you obtain a mean measured value of 2.7 L. What is the percent error of this instrument?

What pulmonary function test presents the highest risk for fainting?

Which of the following adverse reactions is NOT seen with pulmonary function testing?

A patient has an expired minute ventilation of 14.2 L and a ventilatory rate of 25/min. What is the average VT?

What percent of the total lung capacity (TLC) does the residual volume (RV) normally represent?

What is the primary problem in obstructive lung disease?

To what does the range or limit of a device's measuring ability refer?

What is the predicted normal forced vital capacity (FVC) for the average 20-year-old man?

What is the ability of a measuring device to consistently provide the same measure of the same quantity?

To ensure validity of the forced vital capacity (FVC) measurement, how many attempts should the patient perform?

Which of the following is a TRUE statement?

What is the minimum objective standard for the volume exhaled during the final 1 second of an acceptable forced vital capacity effort?

What is the gas normally used to measure the diffusing capacity of the lung?

History of Respiratory Care

Quality and Evidence-Based Respiratory Care

Patient Safety, Communication, and Record Keeping

Principles of Infection Control

Ethical and Legal Implications of Practice

Physical Principles of Respiratory Care

Computer Applications in Respiratory Care

The Respiratory System

The Cardiovascular System

Ventilation

Gas Exchange and Transport

Solutions, Body Fluids, and Electrolytes

Acid-Base Balance

Regulation of Breathing

Bedside Assessment of the Patient

Interpretation of Clinical Laboratory Data

Interpreting the Electrocardiogram

Analysis and Monitoring of Gas Exchange

A Review of Thoracic Imaging

Nutrition Assessment

Pulmonary Infections

Obstructive Lung Disease: Copd, Asthma, and Related Diseases

Interstitial Lung Disease

Pleural Diseases

Pulmonary Vascular Disease

Acute Lung Injury, Pulmonary Edema, and Multiple System Organ

Lung Cancer

Neuromuscular and Other Diseases of the Chest Wall

Disorders of Sleep

Neonatal and Pediatric Respiratory Disorders

Airway Pharmacology

Airway Management

Emergency Cardiovascular Life Support

Humidity and Bland Aerosol Therapy

Aerosol Drug Therapy

Storage and Delivery of Medical Gases

Medical Gas Therapy

Lung Expansion Therapy

Bronchial Hygiene Therapy

Respiratory Failure and the Need for Ventilatory Support

Mechanical Ventilators

Physiology of Ventilatory Support

Initiating and Adjusting Ventilatory Support

Noninvasive Positive Pressure Ventilation

Monitoring and Management of the Patient in the Intensive Care Unit

Discontinuing Ventilatory Support

Neonatal and Pediatric Respiratory Care

Patient Education and Health Promotion

Cardiopulmonary Rehabilitation

Respiratory Care in Alternative Settings

Filters

A patient has an expired minute ventilation of 14.2 L and a ventilatory rate of 25/min. What is the average V_T?